AI search
Query fan-out
A technique where an AI search system splits one question into several related searches, runs them, and combines what it finds into one answer. Google says AI Overviews and AI Mode may use it.
Google's guidance for site owners says AI Overviews and AI Mode may use a "query fan-out" technique, issuing multiple related searches across subtopics and data sources to build a response. Its own example is a question about weeds in a lawn that fans out to searches such as the best herbicides for lawns.
The consequence is that a page can be cited for a sub-question the person never typed, and a cited page may be answering only part of the original question.
The tempting reply is a page for every variation. Google's guide to its generative AI features says that creating pages for each query or fan-out variation primarily to manipulate rankings or AI responses breaks its scaled content abuse policy, and that there is no need to chase long-tail variants. One thorough page that covers the angles a careful reader would want is the safer answer.